Hello!
Long story short. I bought a car (E60 2004, 530i) with "Active Steering fault" message in the display.
I started my troubleshooting with filling up CHF and the recalibration steering wheel trick but with no luck.
Connected INPA and got "ECU not responding". I took up the passenger mat and the ECU was obviously wet. It had also some corrosion on the outside/case but the connector seemed fine. I sprayed the connectors with electronic cleaning spray. I also took the ECU apart with a heater and also ran it in a supersonic cleaner. Made a battery reset on the car and connected it again. Now I could talk to it and see it in INPA and got error code in the AL/AFS:
Code:614A Motorlagewinkel nicht initialisiertThe motorlagerwinkel seemed to be at -1440. All other values seemed fine and real time monitoring seemed OK and lined up pretty OK with the steering wheel as well.Code:kein passendes Fehlersymptom Testbedingungen noch nicht erfuellt Fehler momentan vorhanden und bereits gespeichert Fehler wuerde kein Aufleuchten einer Warnlampe verursachen Allgemeiner Fehler Error code: 61 4A 70 00 01 00 6E 8B 13 1B 00 00 00 00 00 9B 00 00 00 00 00 00 00 00
However, the unit stopped responding after restarting the car (as the display on the car said to reinitialize steering). Checked the fuse but OK.
It seems to be intermittently working after restarting the car. If I disconnect it and let it be for a while and connect it again, it responds. I tried this a couple of times and It stops responding after a few restarts of the car.
Any ideas? Do you think the ECU is failed? My main worry is that: If I get a replacement ECU: If I then still will have the 614A error code - how do I correct this? 614A might be also due to a water corrosioned ECU? How do I calibrate the motor position angle?
Nothing else had been done to the car according to the owner. The message had just poped up (probably because of the water/failed ECU).
Last edited by ulflun; 08-15-2018 at 04:29 PM.
If you had water damage, replace the ecu.
Corrosion can cause invisible damage due to shorts when it was wet.
-Abel
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I will try this. My ECU says:
Do I have to replace it with the same OE number, I've seen used ones on Ebay e.g. with the same code "1279H5646" but most of them are other revisions, even if 1 277 022 056 is the same.Code:1 277 022 056 040325 1279H5646 48325 7441 0447
However, the TIS service manual says its been replaced by:
Code:32 43 6 772 742 production 2 32 43 6 769 489 04.10.2005 3 32 43 6 768 964 13.07.2005 4 32 43 6 768 512 24.08.2004 5 32 43 6 767 245 16.03.2004 6 32 43 6 767 199 19.11.2003 7 32 43 6 766 464 05.01.2004
Last edited by ulflun; 08-16-2018 at 03:23 PM.
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